Just over a week after her husband's tragic death, Jill Zarin has been holed up in her apartment and sources tell RadarOnline.com exclusively pals are worried sick over her.

As readers know, Bobby Zarin died on January 13 at age 71 after a long battle with thyroid cancer.

Insiders reveal the Real Housewives of New York star "hasn’t left her apartment since Bobby died and friends are worried because she is taking it so hard."

Bethenny has been there to support her since the passing, they’re in touch frequently."

her former reality feuds after her hubby's heartbreaking death.

She even invited infamous ex-enemy Bethenny Frankel, 47, to Bobby’s funeral.

“Jill feels that life is too short and holding onto hate and ugly feelings just isn’t worth it,” a source noted at the time.

laid her deceased partner to rest.

“Dedicating the grand finale to the loving, fun & colorful Bobby Zarin #RIP,” Frankel captioned an Instagram video of exploding fireworks as a tribute to Bobby.

Also in attendance at the funeral were Sonja Morgan, Aviva Drescher, Dorinda Medley and Kelly Bensimon.

PHOTOS: Bethenny Frankel Shows off Bikini Body With Her Boy Toy

The source revealed Jill's considering "traveling with friends" or "visiting her daughter in London" to help her cope with the devastating loss.

Bobby died on January 13, 2018 after spending months in and out of a New York Hospital.

We pay for juicy info! Do you have a story for RadarOnline.com? Email us at [email protected], or call us at 800-344-9598 any time, day or night.